kirkaldy



3 Y D L A K R I K I (No ModeL) APPLIANCE FOR PREVENTING DIRT FROMPASSING INTO PIPES.-

Patented Sept. 22, 1885.1

o o o o o o o o o o o w o o o o o o o o o o (No Model.) 3 Sheets-Sheet2. J. KIRKALDY.

APPLIANGE FOR PREVENTING DIRT PROM PASSING INTO PIPES..

No. 326,569. Patented Sept. 22, 1885.

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3' Sheets-Sheet .3.

(No Model.)

.J. KIRKALDY. APPLIANCE FOR PREVENTING DIRT FROM PASSING INTo PIPES.

Patented Sept. 22, 1885.

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UNI ED STATES PATENT OFFICE JOHN KIRKALDY, OF WEST INDIA DOCK ROAD,COUNTY OF MIDDLESEX,

ENGLAND.

APPLIANCE FOR PREVENTING DIRT FROM PASSING INTO PIPES.

SPECIFICATION forming part of Letters Patent No. 326,569, datedSeptember 22, 1885.

, Application filed April 28, 1885. (No model.)

To all whom, it may concern.-

Be it known that I, JOHN KIRKALDY, a subject of the Queen of GreatBritain, residing at 40 WVest India Dock Road, in the county of 5Middlesex, England, engineer, have invented Improved Appliances forPreventing Dirt from Passing into Pipes or Passages Used for ConveyingSteam,'Wate'r, or other Fluid, and for the Prevention of Priming, of.which the following is a specification.

This invention has more especially for. its object to provide anappliance for preventing the entrance of dirt of any kind into tubularsurface condensers or steam-boilers in'which the tubular surface iscomposed of helical coils of tube; but it is also applicable in othercases where it is desired to prevent the passage of dirt through otherpipes or passages used for conveying steam, water,-or other fluid. Itcan also be used advantageously for the prevention of priming insteam-boilers used for supplying steam to steam-enginesthatis, to hinderwater being carried over with the steam to the-cylinders of the engine.For this purpose I employ a perforated partition or grating placedacross achamber providedwith inlet and outlet passages, one on one sideand the other one the opposite side of the grating, so that the steam,water, or other fluid in its pas- 0 3 the perforations. In order thatthe grating may from time to time be readily removed to clear off fromit any dirt which it may have arrested, I make the grating as a slide,which can be passed endwise into its place within the chamber through anopening at one of its ends. The inner end of the slide I provide with ascrewbolt extending from it to pass through a hole in the end of thechamber opposite to that end from which the slide is inserted, and ontothe end of the bolt which protrudes from the chamber I screw a nut, theinner end of which I make somewhat conical to fit into a corre- 5sponding recess on the exterior of the chamber, so that when screwed upit makes a steam-tight joint without packing. The nut also I make asa'cap-nut to prevent escape of steam or fluid between the screw. and thescrew-thread in the nut. The opposite end of sage through the chamberhas to pass through I ing. Fig. 5 is a side elevation, one-half in theslide I form with a flange around it to be drawn against a correspondingsurface on the exterior of the chamber or casing, and thereby form atight joint.

The perforations in the transverse partition or grating may eitherbeimmediatelybetween the inlet and outlet passages of the chamber, orthe chamber may extend downward or in other direction, and theperforations be formed in the portion of the transverse partition whichis within this projecting portion of the chamber, so that the steam orother fluid, as it first enters the chamber, may come against a flatunperforated plate, and the momentum of any solid matters carried alongwith the steam or other fluid be thereby arrested and allowed to droptothe bottom of the chamber,from which they can be removed from time totime by withdrawing the slide. In some cases I cast the shell or casingof the chamberin one piece with another chamber in which a non-returnvalve or stop-valve is fitted.

The drawings hereunto annexed show examples of dirtarresters constructedin the manner above described.

Figure 1 shows a longitudinal section of one form of the dirt-arrester,and Fig. 2 is an end view, one half partly in section, of the same. Fig.3 is a transverse section, and Fig. 4 face view of its perforatedpartition or gratsection,'and Fig. 6 an end View, one-half in section,of the outer casing of another form of the dirt-arrester, in which asettling-cha mber or catch-pit is provided, in which the mattersarrested by the grating may be deposited. Fig. 7 is a transversesection, and Fig. 8 a face view, of the grating for the same. Fig. 9 isa longitudinal section of another form of the dirt-arrester, in whichthe outer shell is cast in one piece with the shell or casing of anon-return valve. Fig. 10 is a longitudinal section of thedirt-arrester, having its shell cast in one piece with the shell orcasing of a stop-valve. v

A is the outer shell of the dirt-arrester. In Fig. 1 it is shown to beformed at one end with a flange and at the other end with a tubularprojection having an internal screw-thread cut init for inlet and outletpipes to be secured to 100 it; but other ways of coupling the inlet andoutletiof the dirt-arrester to -inlet and *outletalso, as -shown, castin one piece with the shell pipes might be adopted.

B is the perforated partition or grating extending across the interiorof the hollow shell A. Its side edges fit against the sides of theshell. stem, B, to project up through a short tubular projection, A,which stands up from the top of the shell. Onto the screw stem isscrewed a cap-nut, G, the under side of which is made conical, as shownat C, to fit within the month of the projection A, which iscorrespondingly coned. In this way a tight joint can be obtained withoutthe use of packing.

At the bottom of the shell is a rectangularopening, through which theperforated grating can be slid into or out of its place in the shell.

. grating become choked it is simply necessary i the perforated gratingmay collect. The par- The opening through which the grating is insertedand withdrawn serves. to discharge the accumulated dirt when thegratingis removed.

The bottom of the grating is formed with a flat plate, B", at rightangles to it, which covers over and extends on all sides beyond therectangular opening. In its upper face is. a

groove into which is fitted the lower end of the portion of the shellthrough which this rectangular opening is formed, and .a tight joint isthereby secured.

Should the perforations of the partition or to unscrew the nut O to beable to remove the grating through the rectangular opening in the bottomof the shell. The grating and ine terior of the shell can then bequickly cleaned and the grating put back-again into its place.

In the construction shown at Figs. 5, 6, 7, and 8 it will be seen thatthe shell is formed with a chamber, D, extending downward to form acatch-pit, in which the dirt arrested by tition B is, as shown, carrieddown to the bottom of the chamber D, and the perforations are formedthrough its lower half.

In the construction shown at Fig. 9 still further provision is made forthe reception of any matters which may be arrested by the grating. Achamber, E, is formed at the bottom of the partition B, into which anydirt arrested by the partition can drop through At the top it isformedwith a screwslits formedthrough the top of the chamber, ail-shown Theshell 1 of this dirt-arrester is or casing of a non-return valve.

. The construction shown at Fig. 10 difl'ers only from that shown atFig. 9 in that the shell of the dirt-arrester is cast in one piece withthe shell or casing of an ordinary stopvalve.

Dirt arresters constructed as above described can be used for preventingsolid mattersbeing carried by the feed-water to the boilers of steam-engines, or for preventing primingthat is, the carrying over of wateralong with the steam passing from a boileror for preventing solidmatters being carried along with the exhaust-steam from a steamengineinto the condenser, and is especially useful when the condenseris atubular surface condenser in which the tubular surface is composed ofhelical coils of tube. Theyoan also be used in a variety of other caseswherever it is desired to arrest the p of solid matter.

Having-now particularly described and ascertained the nature of my saidinvention, and in what manner the same is. to he per formed, I declarethat what I claim is-- I. The combination of the casing or chamherhaving theinletgand outlet openings and the dirt-discharging opening,and the perforated partitiou secured to and crossing the in terior ofthe casing and removable by way of the dirt-discharging opening,substantially-as and for the purpose set forth.

2. The combination of the shell A, perforated partition B screw-stem B,plate B, and cap-nut O, substantially as described.

3. The combination of the shell A, perforated partition B, screw-stem B,plate B", capnutO, and cone surface 0, substantially as described.

4.. The combination of the shell A, perforated, partition B, screw-stemB, plate B, nut Qand chamber D, or chambers D and E, substantial] y asdescribed.

JOHN KIRKALDY.

Witnesses: a W. J. Noawoon,

r WALTER J AMES SKERTEW, Clerks to Messrs. Scorer (it Harris, 17Gracechurch St, London, E. O.

